计算机应用 ›› 2013, Vol. 33 ›› Issue (08): 2240-2243.

• 信息安全 • 上一篇    下一篇

基于分层Arnold变换的置乱算法

张海涛1,姚雪1,陈虹宇1,张晔2   

  1. 1. 辽宁工程技术大学 软件学院,辽宁 葫芦岛 125105;
    2. 哈尔滨工业大学 电子与信息工程学院,哈尔滨 150000
  • 收稿日期:2013-03-05 修回日期:2013-04-18 出版日期:2013-08-01 发布日期:2013-09-11
  • 通讯作者: 姚雪
  • 作者简介:张海涛(1974-),男,黑龙江绥化人,副教授,博士研究生,CCF会员,主要研究方向:图形图像处理、高光谱压缩;
    姚雪(1988-),女,辽宁朝阳人,硕士研究生,主要研究方向:图形图像处理;
    陈虹宇(1989-),男,辽宁朝阳人,硕士研究生,主要研究方向:图形图像处理、目标识别与跟踪;
    张晔(1960-),男,辽宁北镇人,教授,博士生导师,主要研究方向:图形图像处理、高光谱压缩。
  • 基金资助:

    浙江省青年科学基金资助项目

Scrambling algorithm based on layered Arnold transform

ZHANG Haitao1,YAO Xue1,CHEN Hongyu1,ZHANG Ye2   

  1. 1. College of Software, Liaoning Technical University, Huludao Liaoning 125105, China
    2. School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin Heilongjiang 150000, China
  • Received:2013-03-05 Revised:2013-04-18 Online:2013-09-11 Published:2013-08-01
  • Contact: YAO Xue

摘要: 针对数字图像信息隐藏存在的安全问题,提出一种基于按位分层Arnold变换的置乱算法。算法将秘密图像按位平面分层,同时考虑图像的位置迁移和像素的灰度变换,对每个位平面进行不同次数的Arnold变换,经像素交叉换位,相邻像素间按位异或得出置乱图像。实验结果表明,秘密图像分层置乱后直方图分布更加均匀,与白噪声相似度在0.962左右,置乱图像可近无损地还原和提取,提高了信息隐藏的鲁棒性。与其他置乱算法相比,置乱图像具有更高的置乱度、更强的抵御攻击能力,提高了空域信息隐藏的安全性。

关键词: 位平面, Arnold变换, 图像置乱, 置乱度, 空域信息隐藏

Abstract: Concerning the safe problem of digital image information hiding, a scrambling algorithm based on bitwise layered Arnold transform was proposed. The secret image was stratified by bit-plane, taking into account the location and pixel gray transform, each bit-plane was scrambled for different times with Arnold transforma, and the pixel was cross transposed, and adjacent pixels were bitwise XOR to get a scrambling image. The experimental results show that the secret image histogram is more evenly distributed after stratification scrambling, its similarity with the white noise is around 0.962, and the scrambling image can be restored and extracted almost lossless, which improves the robustness. Compared with other scrambling algorithms, the proposed algorithm is more robust to resist attack, and improves the spatial information hiding security.

Key words: bit-plane, Arnold transform, image scrambling, scrambling degree, spatial information hiding

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